<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			pre{
				font-size: 20px;
			}
		</style>
	</head>
	<body>
		<div id="box">
			
		</div>
		<script>
			
			/*
			递归
			
			fn(n=5)=5*4*3*2*1;
			fn(n=5)=n*fn(n-1)=5*fn(4);
			
			
			*/
			
		
			
			
			function fgx(str=""){
				console.log(str+"-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=");
			}
		</script>
	</body>
</html>
